Quality Park Redi-Strip Security Tinted Envelope, #10, 500 per Box (QUA69122) Self-adhesive Redi-Strip flap provides a secure seal. Protective paper strip keeps the self-adhesive closure free of dust. Wove finish adds a professional touch. Heat-resistant adhesive. Envelope Size: 4 1/8 x 9 1/2; Envelope/Mailer Type: Business/Trade; Closure: Redi-Strip. Global Product Type: Envelopes/Mailers-Business/Trade Envelope Size: 4 1/8 x 9 1/2 Envelope/Mailer Type: Business/Trade Closure: Redi-Strip Trade Size: #10 Seam Type: Contemporary Security Tinted: Yes Weight: 24 lb Window Position: None Expansion: No Exterior Material(s): Paper Finish: Wove Color(s): White Custom Imprint Included: No Format/Border: Standard Opening: Open Side Pre-Consumer Recycled Content Percent: 0% Post-Consumer Recycled Content Percent: 0% Total Recycled Content Percent: 0%